Method of forming a forged fulcrum



L. L'. WHITNEY.

METHOD OF FORMING A FORGED FULCRUM. APPLICATION FILED APR.26,1918.

1,335,808. Patented Apr. 6, 1920.

L. L. WHITNEY.

METHOD OF FORMING A FORGED FULCRUM.

APPLICATION FILED APR. 26, 19H}.

Patefited Apr. 6', 1920.

2 SHEETS-SHEET 2.

ffweizfor' lor ml unirnn STATES FATE OFFICE.

LOREN L., WHITNEY, OF HAMMOND, INDIANA, AS$IGNOR TO AMERICAN STEEL FOUNDRIES, OF CHICAGO, ILLINOIS, A CORPORATION OF NEW-JERSEY.

METHOD OF FORMING A FORGED FULCRUM.

To all whom it may concern:

Be it known that I, LOREN L. WHITNEY, a citizen of the United States, and resident of Hammond, in the county of Lake and State of Indiana, have invented certain new and useful Improvements in Methods of Forminga Forged Fulcrum, of which the following is a specification.

This invention relates to a one-piece forged fulcrum. I

The object of the invention is to simplify and improve the method for maklng a one piece forged fulcrum. I

Generally speaking, this and other ob ects are accomplished by making a forged fulcrum employingthe method cons1st1ng first in providing a single blank, then press ng an opening therein for the receptlon of a brake lever and forming portions for co operation with the tension and compression members of a brake beam.

The invention is illustrated on the accompanying sheets of drawings, in which:

Figure 1 is a side elevation, and F 1g. 2 an end view of the blank from which the fulcrum is made;

Fig. 3 is a plan view, and Fig. 4 a side elevation of the blank blocked preparatory to finishing the forged operation;

Fig. 5 is a plan view, and Fig. 6 a side elevation of the forged fulcrum, the lever opening, compression band member and tension rod seat having been completed, the flashings not having been removed;

Fig. 7 is a plan view, and Fig. 8 a side elevation of the fulcrum with the flashings removed;

Fig. 9 is a plan view, and Fig. 10 a side elevation of the completed forged fulcrum after the intermediate portion has been twisted 40 with respect to the ends of the fulcrum.

Fig. 11 is an end view of the completed fulcrum.

Fig. 12 is a detail sectional view of the compression member end of the fulcrum showing a notch in the rear wall for the reception of a projection on the compression member.

The second sheet of drawings discloses a modification of my method, in which Fig. 13 is a side elevation, and Fig. 14 an end view of a single piece of stock;

Fig. 15 is a plan view, and Fig. 16 a side elevation of the piece of stock after it has Specification of Letters Patent.

Application filed April 26,

Patented Apr. 6, 1920.

1912. Serial No. 230,988.

received its first forming operation, including a displacement of metal at the center and at one end of the blank, the ends of the blanks being formed at an angle of 40 with" opening and compression and tension cooperating members are formed, the flashings not having been removed;

Fig. 19 is a plan view, and Fig. 20 is a side elevation of the fulcrum with the flashings removed;

Fig. 21 is a plan view, and Fig. 22 a side elevation of the completed fulcrum;

Fig. 23 is a fragmentary plan view, and Fig. 24 a fragmentary side elevation of a fulcrum, the compression member end of which is formed differently from'the arrangement shown in the other figures of the drawing.

The various novel features of my invention will be apparent from the following description and drawings and will be particularly pointed out in the appended claims.

Referring first to Figs. 1 and 2 of the drawings, it will be noted that Ihave provided a single blank 25 in the form of a rectangular prism, which preferably is considerably deeper than it is wide. In the' first forming operation, the dies are pressed into the narrow sides of the blank to form opposite depressions 26at the middle of the fulcrum blank, and a depression 27 at the compression member end thereof, as shown in Figs. 3 and 4. In the next formingoperation the central opening 26 is practically madecomplete with the exception of the central flashing 28, and at the sametime the compression end is formed into band 29 for the reception of thebrake beam com v presslon member, and the other end of the fulcrum is provided with a tension rod seat 30, as shown in Figs. 5 and 6. At the same time the walls of the central lever opening of the fulcrum are provided with hearing hubs 30*. In the next operation, the flasl ings are trimmed from the fulcrum, as shown in Figs. 7 and 8. In the next operation the central body portion of the fulcrum is twisted with respect to the ends of the fulcrum, and the walls 81 and 32 of the lever opening are provided with holes 33 for the pivot pin of the brake lever, as shown in Figs. 9 and 10. The rear wall of the band with a notch 8 to receive a the brake beam compression member. By means of this simple method a one piece forged fulcrum may be formed which is adapted to meet the various requirements for successful commercial operation.

By referring to the other sheet of drawings, it will be noted that the same blank is shown in Figs. 13 and 14. However, as shown in Figs. 15 and 16, it will be noted that the ends 35 and 36 of the blank are first forged vertically and angularly with respect to the central body portion of the fulcrum instead of twisting the body portion, as shown in Figs. 9 and 10. Also the metal in the central body portion is dis placed to form depressions 37, a depression 38 also being formed in the compression member end of the fulcrum. In the next step the fulcrum is provided with a band 39 for receiving the brake beam compression member and provided with a seat 410 for the brake beam tension member, the lever opening 4E1 also being completed with the exception that the flashings are still present. The next step includes the trimming-of the fiashings away from. the fulcrum, as shown in Figs. 19 and 20, and the final step includes the drilling or punching of holes t! for the pivot pin of the brake lever.

If it is desired, the compression member end of the fulcrum may be in the form of laterally extending projections 45, (Figs. 23 and 24) which may be riveted to the compression member instead of providing a band, as shown in the other forms of fulcrums.

It is apparent that there may be other modifications of the invention, and it is my intention to cover all such modifications which do not involve a departure from the spirit and scope ofthe invention as set forth in the following claims.

I claim:

1 The method of forming a forged fulcrum consisting first in providing a single blank, then pressing an opening therein for the reception of a brake lever, and forming portions for cooperation with the tension and compression members of a brake beam.

29 is provided pro ect1on on 2. The method of forming a forged fulcrum consisting first in providing a single blank, then forming an opening intermediate its ends for the reception of a brake lever, and then forming a tension member seat and a portion to cooperate with a brake beam compression member.

The method of forming a forged fulcrum consisting first in providing a single blank, then providing said blank with an opening intermediate its ends for the reception of a brake lever, and then forming a band at one end for the reception of a com pression member and a seat in the other end thereof for a tension member.

l. The method of forming aforged fulcrum consisting first in providing a single blank, then forming an opening intermediate its ends for a brake lever, then forming a band at one end thereof for a brake beam compression member and a seat at the other end for a tension member, and then relatively twisting an intermediate part of the fulcrum with respect to the ends thereof.

The method of forming a forged brake beam fulcrum consisting first in providing a single blank, then forging the ends thereof at an angle with respect to an intermediate portion of the blank, then forming an opening in the middle portion of the blank for the reception of a brake lever and forming the ends to cooperate with brake beam compression and tension members.

6. The method of forming a forged brake beam fulcrum consisting first in providing a single blank, then forging the ends thereof. at an angle with respect to an intermediate portion of the blank, then forming an opening in the middle portion of the blank for the reception of a brake lever and forming the ends to cooperate with brake beam com-- pression and tension members, and then forming openings in the middle portion of the fulcrum for the reception of a brake lever pivot member.

Signed at Hammond, Indiana, this 23rd day of April, 1918.

LOREN L. WHITNEY.

Witnesses:

WVILLIAM C. LmMBAoH,

J. M. E-BnR'r. 

